Sertãozinho climate — normals and trends

Q: What is the climate of Sertãozinho?

Sertãozinho has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 22.8 °C and it receives 1,266 mm of precipitation per year.

Q: What is the hottest day ever recorded in Sertãozinho?

The hottest day measured in Sertãozinho between 1940 and 2025 was 17 October 1963, reaching 40.6 °C.

Q: What is the coldest day in Sertãozinho?

The coldest day measured in Sertãozinho between 1940 and 2025 was 26 June 1994, at 1.6 °C.

Q: Does it snow in Sertãozinho?

Almost never: Sertãozinho sees virtually no snow, with about 0 frost days per year.

Q: Has the climate of Sertãozinho warmed?

Yes: Sertãozinho warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Sertãozinho?

The wettest day measured in Sertãozinho between 1940 and 2025 was 3 January 1961, with 169 mm of rain in 24 hours.

Q: What was the windiest day in Sertãozinho?

The windiest day measured in Sertãozinho between 1940 and 2025 was 7 June 2011, with winds reaching 32.2 km/h.

Q: What is the warmest month in Sertãozinho?

The warmest month in Sertãozinho is January (24.5 °C on average); the coldest is June (19.4 °C).

Q: How much does it rain in Sertãozinho?

Sertãozinho receives on average 1,266 mm of precipitation per year, spread over about 141 rainy days.

Q: Is it sunny in Sertãozinho?

Sertãozinho gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.

Sertãozinho (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 22.8 °C and it receives 1,266 mm of precipitation per year.

These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.

The warmest month is January (24.5 °C on average) and the coldest is June (19.4 °C). Rainfall peaks in January.

Sertãozinho averages 0 frost days, 119 hot days (≥ 30 °C) and 141 rainy days per year.

Sertãozinho has warmed by +2.2 °C between 1940 and 2025, or +0.26 °C per decade. This trend is statistically significant.

The hottest day of the period reached 40.6 °C (on 17 October 1963) and the coldest 1.6 °C (on 26 June 1994).

Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.

Climate normals · ERA5

SertãozinhoSão Paulo

coords: -21.14°, -47.99°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthJanuaryColdest monthJuneWettest monthJanuaryDriest monthAugust

Mean daily temperature

22.8°C

Average daily high

28.5°C

Average daily low

18.0°C

Annual rainfall

1,266mm

Sunshine / day

10.1h

Mean relative humidity

70%

Average peak wind

12.5km/h

Seasonal range

5.1°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

119 d/yr

Rainy days (≥ 1 mm)

141 d/yr

Annual snowfall

0.0 cm

Average feels-like high

30.7 °C

Average feels-like low

18.7 °C

Average peak gust

30.0 km/h

Tropical nights (≥ 20 °C)

121 d/yr

Solar radiation

18.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.2 °C

since 1940

+0.3 °C per decade · r² = 0.65 · p = < 0.001

19402025

Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).

A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.

Records for the period

Hottest day

40.6 °C

17 October 1963

Coldest day

1.6 °C

26 June 1994

Wettest day

169 mm

3 January 1961

Windiest day

32.2 km/h

7 June 2011

Strongest gust

81.7 km/h

30 July 1989

Hottest feels-like

43.4 °C

29 October 2007

Coldest feels-like

-1.7 °C

26 June 1994

Sunniest day

13.3 h

12 December 1941

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	36.7 °C1 December 2025	3.0 °C25 June 2025	23.4 °C	734 mm	188
2024	39.9 °C8 October 2024	5.6 °C11 August 2024	24.3 °C	1,021 mm	234
2023	39.7 °C13 November 2023	5.3 °C18 June 2023	23.5 °C	989 mm	188
2022	35.9 °C29 October 2022	6.4 °C18 May 2022	22.9 °C	937 mm	153
2021	39.5 °C20 September 2021	3.2 °C30 June 2021	23.6 °C	831 mm	199
2020	40.0 °C7 October 2020	6.1 °C28 May 2020	23.3 °C	881 mm	163
2019	38.0 °C12 September 2019	5.6 °C7 July 2019	24.2 °C	909 mm	187
2018	38.2 °C24 September 2018	8.7 °C11 August 2018	24.4 °C	878 mm	216
2017	38.2 °C14 October 2017	9.2 °C11 June 2017	24.2 °C	907 mm	192
2016	38.3 °C19 October 2016	6.8 °C12 June 2016	23.8 °C	1,215 mm	194
2015	39.2 °C16 October 2015	12.6 °C28 June 2015	24.3 °C	1,227 mm	187
2014	40.1 °C17 October 2014	10.2 °C27 May 2014	24.8 °C	748 mm	233
2013	37.0 °C28 September 2013	6.0 °C28 August 2013	23.2 °C	1,133 mm	147
2012	38.7 °C31 October 2012	7.4 °C19 July 2012	23.9 °C	1,117 mm	186
2011	36.9 °C30 September 2011	5.1 °C28 June 2011	23.2 °C	1,227 mm	160
2010	36.8 °C29 October 2010	8.5 °C13 May 2010	23.8 °C	992 mm	193
2009	34.7 °C6 March 2009	6.1 °C3 June 2009	23.1 °C	1,475 mm	121
2008	38.3 °C29 October 2008	8.4 °C17 June 2008	23.1 °C	1,140 mm	139
2007	37.4 °C23 September 2007	7.9 °C5 June 2007	23.9 °C	1,242 mm	190
2006	36.4 °C15 September 2006	8.7 °C6 September 2006	23.2 °C	1,158 mm	151
2005	36.6 °C13 October 2005	10.5 °C12 August 2005	23.6 °C	1,135 mm	167
2004	36.8 °C26 September 2004	8.8 °C28 May 2004	22.6 °C	1,425 mm	107
2003	37.6 °C25 September 2003	8.5 °C27 May 2003	23.3 °C	1,010 mm	147
2002	38.0 °C11 October 2002	6.2 °C3 September 2002	24.0 °C	1,003 mm	194
2001	36.8 °C10 September 2001	8.2 °C22 June 2001	23.4 °C	1,042 mm	185
2000	38.0 °C13 October 2000	4.0 °C18 July 2000	22.9 °C	1,513 mm	141
1999	37.0 °C1 October 1999	7.3 °C18 April 1999	22.9 °C	1,149 mm	143
1998	36.3 °C17 September 1998	9.2 °C9 June 1998	23.0 °C	1,418 mm	153
1997	37.2 °C10 November 1997	6.7 °C9 June 1997	23.0 °C	1,425 mm	147
1996	34.6 °C29 January 1996	6.6 °C13 July 1996	22.6 °C	1,646 mm	132
1995	35.6 °C11 September 1995	9.5 °C8 June 1995	23.0 °C	1,573 mm	146
1994	37.0 °C13 October 1994	1.6 °C26 June 1994	23.4 °C	1,228 mm	160
1993	35.7 °C16 November 1993	6.9 °C20 June 1993	22.8 °C	1,252 mm	114
1992	32.7 °C15 November 1992	9.8 °C24 July 1992	22.5 °C	1,529 mm	65
1991	34.6 °C30 October 1991	9.7 °C10 July 1991	22.9 °C	1,677 mm	112
1990	37.0 °C12 October 1990	5.0 °C19 May 1990	23.4 °C	1,047 mm	172
1989	35.2 °C23 September 1989	7.1 °C12 July 1989	22.5 °C	1,312 mm	114
1988	37.9 °C27 September 1988	4.7 °C6 June 1988	23.0 °C	1,132 mm	137
1987	37.6 °C18 October 1987	5.6 °C8 August 1987	23.1 °C	1,124 mm	152
1986	36.7 °C7 October 1986	8.0 °C2 June 1986	22.8 °C	1,158 mm	120
1985	37.9 °C17 November 1985	3.8 °C9 June 1985	22.8 °C	1,099 mm	128
1984	35.8 °C8 November 1984	8.0 °C27 August 1984	23.4 °C	1,083 mm	139
1983	32.9 °C17 February 1983	8.5 °C4 August 1983	22.5 °C	2,076 mm	71
1982	34.3 °C12 September 1982	10.8 °C1 August 1982	22.5 °C	1,556 mm	83
1981	36.5 °C28 September 1981	2.3 °C21 July 1981	22.8 °C	1,117 mm	122
1980	37.4 °C28 October 1980	7.5 °C15 June 1980	23.0 °C	1,166 mm	125
1979	35.6 °C22 November 1979	2.0 °C1 June 1979	22.3 °C	1,240 mm	107
1978	34.9 °C25 October 1978	5.0 °C16 August 1978	22.6 °C	1,149 mm	122
1977	34.5 °C13 March 1977	6.5 °C18 May 1977	23.1 °C	1,229 mm	132
1976	34.5 °C19 January 1976	6.4 °C6 July 1976	21.7 °C	1,631 mm	65
1975	35.0 °C8 September 1975	5.4 °C7 July 1975	22.7 °C	1,156 mm	134
1974	35.8 °C19 November 1974	8.4 °C29 May 1974	22.4 °C	1,325 mm	117
1973	36.1 °C18 September 1973	5.3 °C20 June 1973	23.1 °C	1,120 mm	153
1972	35.6 °C26 October 1972	4.6 °C9 July 1972	22.3 °C	1,359 mm	94
1971	35.8 °C3 February 1971	7.6 °C7 July 1971	22.5 °C	1,100 mm	116
1970	35.6 °C17 October 1970	9.6 °C3 July 1970	22.9 °C	787 mm	139
1969	36.2 °C11 September 1969	4.2 °C11 July 1969	23.5 °C	732 mm	172
1968	37.2 °C6 November 1968	6.1 °C18 May 1968	22.2 °C	800 mm	119
1967	36.0 °C6 September 1967	6.4 °C10 June 1967	22.7 °C	1,280 mm	110
1966	35.3 °C16 September 1966	8.4 °C6 August 1966	22.1 °C	1,298 mm	59
1965	35.1 °C10 September 1965	3.3 °C12 July 1965	21.6 °C	1,593 mm	46
1964	33.6 °C2 September 1964	6.1 °C28 July 1964	21.2 °C	1,815 mm	29
1963	40.6 °C17 October 1963	7.9 °C21 June 1963	23.6 °C	845 mm	133
1962	34.8 °C11 September 1962	5.4 °C18 July 1962	21.3 °C	1,632 mm	34
1961	39.1 °C28 September 1961	10.4 °C29 May 1961	23.2 °C	1,363 mm	97
1960	38.4 °C24 September 1960	7.7 °C25 June 1960	21.8 °C	1,546 mm	49
1959	35.8 °C4 October 1959	6.1 °C8 June 1959	22.7 °C	1,272 mm	100
1958	35.7 °C19 December 1958	9.3 °C22 June 1958	22.3 °C	1,112 mm	100
1957	37.2 °C20 October 1957	3.8 °C22 July 1957	22.0 °C	1,320 mm	63
1956	35.6 °C8 October 1956	7.3 °C5 June 1956	21.6 °C	1,004 mm	80
1955	37.7 °C17 September 1955	6.1 °C25 May 1955	22.5 °C	1,166 mm	89
1954	36.2 °C22 September 1954	6.9 °C21 June 1954	22.2 °C	1,545 mm	70
1953	33.9 °C21 August 1953	10.7 °C6 July 1953	22.2 °C	1,520 mm	32
1952	35.7 °C30 September 1952	6.2 °C17 July 1952	21.7 °C	1,503 mm	39
1951	35.4 °C26 September 1951	10.1 °C16 July 1951	22.0 °C	1,095 mm	70
1950	35.3 °C17 September 1950	8.3 °C12 June 1950	21.8 °C	1,608 mm	57
1949	35.7 °C12 October 1949	8.9 °C19 May 1949	21.9 °C	1,653 mm	45
1948	37.1 °C26 September 1948	7.5 °C16 June 1948	22.4 °C	1,142 mm	82
1947	33.1 °C8 January 1947	7.7 °C4 August 1947	21.4 °C	1,667 mm	25
1946	33.2 °C6 September 1946	7.8 °C4 June 1946	22.0 °C	1,532 mm	47
1945	33.6 °C29 September 1945	9.6 °C26 June 1945	21.6 °C	2,372 mm	32
1944	36.1 °C7 September 1944	9.6 °C18 June 1944	22.2 °C	1,621 mm	45
1943	31.6 °C17 January 1943	8.9 °C26 June 1943	21.0 °C	1,365 mm	16
1942	38.1 °C28 November 1942	5.6 °C19 June 1942	21.8 °C	938 mm	95
1941	32.2 °C26 October 1941	9.2 °C30 May 1941	21.6 °C	2,007 mm	26
1940	34.1 °C23 August 1940	10.3 °C19 August 1940	21.8 °C	1,786 mm	29

Normals computed over complete calendar years 1940–2025.

A specific year

Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?

Year

Across the whole year

Average daily high

29.9 °C

+1.4 °C

Hot days (≥ 30 °C)

188 d/yr

+69

Frost days (< 0 °C)

0 d/yr

Annual rainfall

734 mm

-532 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	31.0 °C	+1.8 °C	121 mm	-97 mm
Feb	31.6 °C	+2.3 °C	85 mm	-85 mm
Mar	32.2 °C	+3.1 °C	61 mm	-76 mm
Apr	29.2 °C	+0.9 °C	86 mm	+19 mm
May	27.9 °C	+1.6 °C	8 mm	-37 mm
Jun	26.5 °C	+0.8 °C	38 mm	+9 mm
Jul	26.7 °C	+0.5 °C	3 mm	-21 mm
Aug	29.4 °C	+0.7 °C	2 mm	-20 mm
Sep	32.3 °C	+1.9 °C	20 mm	-37 mm
Oct	30.6 °C	+0.4 °C	101 mm	-25 mm
Nov	30.8 °C	+1.3 °C	70 mm	-90 mm
Dec	31.3 °C	+2.4 °C	139 mm	-73 mm

The year's extremes

Hottest day

36.7 °C

1 Dec 2025

Coldest day

3.0 °C

25 Jun 2025

Wettest day

35.1 mm

3 Feb 2025

Windiest day

26.0 km/h

10 Dec 2025

Strongest gust

70.6 km/h

9 Dec 2025

Hottest feels-like

40.6 °C

26 Dec 2025

Coldest feels-like

0.2 °C

25 Jun 2025

Sunniest day

13.2 h

5 Dec 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Sertãozinho?

Sertãozinho has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 22.8 °C and it receives 1,266 mm of precipitation per year.

What is the hottest day ever recorded in Sertãozinho?

The hottest day measured in Sertãozinho between 1940 and 2025 was 17 October 1963, reaching 40.6 °C.

What is the coldest day in Sertãozinho?

The coldest day measured in Sertãozinho between 1940 and 2025 was 26 June 1994, at 1.6 °C.

Does it snow in Sertãozinho?

Almost never: Sertãozinho sees virtually no snow, with about 0 frost days per year.

Has the climate of Sertãozinho warmed?

Yes: Sertãozinho warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Sertãozinho?

The wettest day measured in Sertãozinho between 1940 and 2025 was 3 January 1961, with 169 mm of rain in 24 hours.

What was the windiest day in Sertãozinho?

The windiest day measured in Sertãozinho between 1940 and 2025 was 7 June 2011, with winds reaching 32.2 km/h.

What is the warmest month in Sertãozinho?

The warmest month in Sertãozinho is January (24.5 °C on average); the coldest is June (19.4 °C).

How much does it rain in Sertãozinho?

Sertãozinho receives on average 1,266 mm of precipitation per year, spread over about 141 rainy days.

Is it sunny in Sertãozinho?

Sertãozinho gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.

Are there tropical nights in Sertãozinho?

Yes: Sertãozinho has on average 121 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Sertãozinho?

In Sertãozinho, between 1940 and 2025, the highest apparent temperature reached 43.4 °C on 29 October 2007, and the lowest was -1.7 °C on 26 June 1994.

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